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CAS No.: | 517-82-8 |
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Name: | echinochrome A |
Article Data: | 4 |
Molecular Structure: | |
Formula: | C12H10 O7 |
Molecular Weight: | 266.207 |
Synonyms: | 1,4-Naphthoquinone,2-ethyl-3,5,6,7,8-pentahydroxy- (7CI,8CI);2-Ethyl-3,5,6,7,8-pentahydroxy-1,4-naphthoquinone; Echinochrome; Echinochrome1; Echinochrome A |
Density: | 1.86g/cm3 |
Melting Point: | 220° (some decompn) |
Boiling Point: | 197.3°Cat760mmHg |
Flash Point: | 87.4°C |
PSA: | 135.29000 |
LogP: | 1.11010 |
2-ethyl-5,8-dihydroxy-3,6,7-trimethoxy-[1,4]naphthoquinone
echinochrome A
Conditions | Yield |
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With aluminium trichloride In nitrobenzene at 80℃; for 4h; | 91% |
3-ethyl-3-hydroxy-6,7-diisopropoxy-5,8-dimethoxy-1,4-naphthoquinone
echinochrome A
Conditions | Yield |
---|---|
With boron tribromide In dichloromethane at -78 - 25℃; | 41% |
3-ethyl-1,2,4-trimethoxybenzene
echinochrome A
Conditions | Yield |
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at 180℃; in einer AlCl3-NaCl-Schmelze; |
1,4-dimethoxy-2,3-diisopropoxybenzene
echinochrome A
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 59 percent / s-BuLi; TMEDA / tetrahydrofuran / 2 h / -78 °C 2: 0.33 h / 150 °C 3: CAN / diethyl ether; H2O 4: 0.35 g / air / 7 h 5: 41 percent / BBr3 / CH2Cl2 / -78 - 25 °C View Scheme |
2-ethyl-3-isopropoxy-4-hydroxy-4-(2',5'-dimethoxy-3',4'-diisopropoxyphenyl)-2-cyclobuten-2-one
echinochrome A
Conditions | Yield |
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Multi-step reaction with 4 steps 1: 0.33 h / 150 °C 2: CAN / diethyl ether; H2O 3: 0.35 g / air / 7 h 4: 41 percent / BBr3 / CH2Cl2 / -78 - 25 °C View Scheme |
2-ethyl-3,6,7-triisopropoxy-5,8-dimethoxy-[1,4]naphthoquinone
echinochrome A
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 0.35 g / air / 7 h 2: 41 percent / BBr3 / CH2Cl2 / -78 - 25 °C View Scheme |
2-ethyl-3,6,7-triisopropoxy-5,8-dimethoxy-naphthalene-1,4-diol
echinochrome A
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: CAN / diethyl ether; H2O 2: 0.35 g / air / 7 h 3: 41 percent / BBr3 / CH2Cl2 / -78 - 25 °C View Scheme |
2,3-dichloro-5,8-dihydroxy-[1,4]naphthoquinone
echinochrome A
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 66 percent / MnO2, conc. H2SO4 / 2 h / Ambient temperature 2: 40 percent / 2-methyl-propan-2-ol / Heating 3: 81 percent / 3 h / Heating 4: 74 percent / CsF, Al2O3 / 8 h / 90 - 95 °C 5: 91 percent / AlCl3 / nitrobenzene / 4 h / 80 °C View Scheme |
3-ethyl-1,2,4-trimethoxybenzene
echinochrome A
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 61 percent / AlCl3, NaCl / 0.08 h / 190 °C 2: 81 percent / 3 h / Heating 3: 74 percent / CsF, Al2O3 / 8 h / 90 - 95 °C 4: 91 percent / AlCl3 / nitrobenzene / 4 h / 80 °C View Scheme |
2,5,8-trihydroxy-6,7-dichloro-1,4-naphthoquinone
echinochrome A
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 40 percent / 2-methyl-propan-2-ol / Heating 2: 81 percent / 3 h / Heating 3: 74 percent / CsF, Al2O3 / 8 h / 90 - 95 °C 4: 91 percent / AlCl3 / nitrobenzene / 4 h / 80 °C View Scheme |